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Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Chapter 12Evidence-Based Practice and
Nursing Theory
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Overview of Evidence-Based Practice
• Evidence-based practice (EBP) was introduced in the 1970s by Dr. Archie Cochrane.
• Dr. Cochrane focused on critical review of research (emphasis on RCTs) to improve medical practice.
• Application in nursing has been delayed but has been growing over the past 10 years.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Overview of Evidence-Based Practice—(cont.)
• EBP is based on the premise that health professionals should not base practice on tradition and belief but on information grounded in research.
• EBP is not synonymous with research.
– Research focuses on discovery.
– EBP focuses on application.
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Overview of Evidence-Based Practice—(cont.)
• EBP involves:
– Identifying a clinical problem
– Searching the literature and critically evaluating research evidence
– Determining appropriate interventions
• EBP integrates research, theory, and practice.
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Evidence-Based Practice• EBP is ―the conscientious, explicit, and judicious use of
theory-derived, research-based information in making decisions about care delivery . . . in consideration of individual needs and preferences‖
• Key concepts of EBP
– Best evidence
– Expertise
– Patient values
• Careful review of research findings according to guidelines.
• De-emphasizes ritual, isolated, and unsystematic clinical experiences, options, and tradition as basis for practice
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Question
Which of the following is NOT considered to be a key concept of EBP?
A. Best evidence
B. Patient values
C. Provider expertise
D. Traditional practices
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Answer
D. Traditional practices
Rationale: EBP de-emphasizes ritual, unsupported practices, and tradition and focuses on research-supported interventions that considers patients’ desires and needs and provider expertise.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Nursing
• Some sources for EBP information/guidelines
– Cochrane Collaboration/Cochrane Database of Systematic Reviews—network that helps health care providers make informed decisions about health care
– Agency for Healthcare Research and Quality (AHRQ)—maintains database of evidence-based clinical practice guidelines
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Nursing—(cont.)
• Concerns
– Too much focus on EBP could result in ―cookbook care‖ and loss of ―art‖ of nursing.
– Lessening of attention to holistic care
– Health care reimbursement might drift exclusively to interventions substantiated by ―evidence.‖
– Not all health care practices can or should be based on science per se (What about ―care‖?).
• Consensus agreement that EBP in nursing should consider all types of evidence (not just RCTs), as well as clinical experience, patient experiences and desires, and relevant local/organizational influences.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Practice-Based Evidence
• PBE is a relatively new concept in nursing and health care.
• Based on the observation that many interventions have limited formal research support
• PBE recognizes the importance of the environment in determining practice recommendations.
• Premise of PBE is that large databases should be reviewed or ―mined‖ to gather data on quality and effectiveness.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Practice-Based Evidence—(cont.)
• PBE seeks to determine what works best for which patients, under what circumstances, and at what costs.
• More comprehensive picture than RCTs
• Sources include:
– Benchmarking data
– Clinical expertise
– Cost-effective analyses
– Infection control data
– Medical record data
– National standards of care
– Quality improvement data
– Patient and family preferences
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Relationships among practice, theory, research, and the PBE/ EBP cycle. (From Walker, L. O., & Avant, K. C. [© 2011]. Strategies for theory construction in nursing [5th ed., Fig. 2-3; p. 46]. Reprinted by permission of Pearson Education, Inc., Upper Saddle River, NJ.)
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Theory and Evidence-Based Practice
• More awareness of EBP has renewed appreciation for linkages among research, theory, and practice.
• Research and clinical data provide evidence for EBP and/or PBE and can generate practice guidelines and/or situation-specific theories.
• Preference for term ―theory-guided, evidence-based practice‖
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Models for Evidence-Based Practice
• For some EBP models, the goal is to create or establish EBP protocols, procedures, or guidelines.
• Some EBP models focus on implementation of EBP in the setting or institution.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Models for Evidence-Based Practice—(cont.)• Most commonly used and described in nursing literature
are:
– Academic Center for Evidence-Based Practice Star Model (ACE Star Model) (Stevens, 2004)
– Advancing Research and Clinical Practice Through Close Collaboration (ARCC Model) (Melnyk & Fineout-Overholt, 2011)
– Iowa Model (Titler et al., 2001)
– Johns Hopkins Nursing Evidence-Based Practice Model (JHNEBP) (Newhouse et al., 2007)
– Stetler Model of Evidence-Based Practice (Stetler, 2001)
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—
ACE Star Model
• Developed by faculty at University of Texas Health Science Center at San Antonio
• Depicted by five points of sequential knowledge transformation
– Discovery research
– Evidence summary
– Translation to guidelines
– Practice integration
– Process and outcome evaluation
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Diagram of the ACE star model for evidence-based practice.(Used with permission from Stevens, K. R. [2012]. ACE Star Model: Knowledge transformation©. Academic Center for Evidence-Based Practice. Available at http://www.acestar.uthscsa.edu/acestar-model.asp)
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—ACE Star Model—(cont.)
• Knowledge transformation (KT) consists of eight premises.
– KT is necessary prior to using research for clinical decision making.
– KT is derived from multiple sources (e.g., research, experience, authority).
– Research process is the most stable source of knowledge.
– Evidence can be classified by strength of evidence based on rigor.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—ACE Star Model—(cont.)
• Knowledge transformation (KT) consists of eight premises—(cont.)
– As research is converted through a system of steps, other knowledge is created.
– The form in which knowledge exists can be referenced to its use.
– The form of knowledge determines its usability.
– KT takes place through steps (summarization, translation, application, integration, and evaluation).
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—ACE Star Model—(cont.)
• ACE Star Model has been shown useful in teaching the process of research evidence.
• For more information, see: http://www.acestar.uthscsa.edu/index.asp
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—ARCC Model
• The Advancing Research and Clinical Practice Through Close Collaboration (ARCC) Model was developed to advance and sustain EBP (Melnyk & Fineout-Overholt, 2002).
• Basis in control theory and cognitive behavioral theories
• Appropriate in clinical practice—particularly acute care
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—ARCC Model—(cont.)
• Central constructs of the ARCC Model
– Assessment of organizational culture and readiness for EBP
– Identification of strengths and barriers to EBP
– Development and use of EBP mentors
– EBP implementation
– Outcome evaluation (providers’ satisfaction, cohesion, intent to leave, turnover, improved patient outcomes, hospital costs)
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Evidence-Based Models—ARCC Model—(cont.)
• Several scales have been developed to measure implementation of EBP using the ARCC Model.
• Among them are scales to measure organizational readiness and EBP beliefs.
• Considerable amount of research support for the ARCC model
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Iowa Model of EBP to Promote Quality Care
• The Iowa Model of EBP was developed in the 1990s.
– Intent to promote quality care through research utilization
– It was developed to provide guidance for nurses in making decisions about practice.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Question
Tell whether the following statement is true or false:
The rationale for development of the Iowa Model of EBP was to manage the costs of health care.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Answer
False
The Iowa Model for EBP was developed to promote quality nursing care through incorporation of research into practice.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Iowa Model of EBP to Promote Quality Care—(cont.)
• Organized into starting points, decision points, and feedback loops
– Starting points are problem-focused triggers or knowledge-focused triggers
– Decision points:
• Is the topic a priority?
• Is there sufficient research base?
• Is change appropriate for adoption in practice?
– There are numerous feedback loops based on the model.
– After implementation of practice change, monitor and analyze the structure, process, and outcome data; then disseminate results.
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Diagram of the Iowa method of evidence-based practice. (Reprinted with permission from University of Iowa Hospitals and Clinics. © 1998. For permission to use or reproduce the model, please contact University of Iowa Hospitals and Clinics at 319-384-9098.)
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Iowa Model of EBP to Promote Quality Care—Resources
• For more information, see:
http://www.nnpnetwork.org/ebp-resources/iowa-model
http://www.hinursing.org/pdf/IowaModel.pdf
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Evidence-Based Practice Models—Johns Hopkins Nursing EBP Model
• The JHNEP Model is a problem-solving approach to clinical decision making.
• Developed to accelerate research into nursing practice and promote nursing autonomy, leadership, and engagement with colleagues
• Combines the nursing process, the ANA Standards of Practice, critical thinking, and research utilization
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Johns Hopkins Nursing EBP Model—(cont.)
• Three core elements (PET)
– Practice question
– Evidence
– Translation
• Several phases composed of 18 steps.
– Each step helps clarify the processes.
– Assist in understanding how to proceed
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Johns Hopkins Nursing EBP Model—(cont.)
• Model begins with an EBP question (PICO) consisting of:
Practice question (patient, population and problem)
Intervention
Comparison as appropriate
Desired Outcome(s)
• Other steps involve defining the scope of the question, assigning reasonability for leadership, recruiting a team and scheduling conferences.
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Question
When developing a PICO question, the ―C‖ represents which of the following?
A. Care options
B. Comparison with a baseline or standard
C. Consideration of patient or provider values/wishes
D. Costs of interventions
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Answer
B. Comparison with a baseline or standard
Rationale: A PICO question consists of:
Practice question (patient, population, and problem)
Intervention
Comparison as appropriate
Desired Outcome(s)
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Johns Hopkins Nursing EBP Model—(cont.)
• Evidence phase includes:
– Literature search
– Team appraisal and recommendations
• Translation phase:
– Team decides whether and how to implement changes.
– Evaluation of implementation
– Communicate the findings PRN
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice Models—Johns Hopkins Nursing EBP Model—Resources
• For more information (optional course):
http://www.hinursing.org/pdf/IowaModel.pdf
• Data collection tool:
http://www.nursingworld.org/DocumentVault/NursingPractice/Research-Toolkit/JHNEBP-Research-Evidence-Appraisal.pdf
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Evidence-Based Practice Models—Stetler Model
• Originally implemented in the 1970s as a quality improvement effort
• Similar to the nursing process thus easily implemented
• Five steps or phases
– Preparation
– Validation
– Comparative evaluation/decision making
– Translation/application
– Evaluation
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Evidence-Based Practice Models—Stetler Model—(cont.)• Preparation
– Propose, control, and source research evidence
• Validation
– Determine credibility of findings and potential for qualifiers for application
• Comparative evaluation/decision making
– Synthesis of information and decisions for recommendations for criteria and applicability
• Translation/application
– Create operational definitions for use and actions for change
• Evaluation
– Determine alternate types of evaluation
Copyright © 2015 Wolters Kluwer Health | Lippincott Williams & Wilkins
Evidence-Based Practice—Summary
• EBP has become one of the key tenets of quality nursing care.
• In nursing, it is critical that EBP go beyond research and be theory based.
• Growing attention to the concept of PBE has renewed attention to the critical role of theory in excellent nursing practice.